Freelance Senior Backend Engineer (ZZP)

Project context

Eneco is launching a comprehensive B2C re-platforming program to modernize its digital landscape and enable future growth, scalability, and improved customer experiences. The new platform will replace existing legacy systems and serve as the foundation for the next generation of digital services.

Key to the replatforming is to ensure delivery takes place in an iterative fashion, unlocking value early in the process while ensuring alignment with the future vision of the platform. Enabling faster launching of propositions, testing in the market and generally reducing the associated cost.

Eneco is looking to contract specialists (Senior .NET engineers and Senior QA automation engineer) to develop and deliver specific pieces of this platform.

You will be working within the core ecosystem that powers our B2C business — covering areas such as product configuration, contract management, billing, fulfilment, pricing, and metering. Within this landscape, you’ll design and build scalable backend solutions, integrate diverse systems through APIs and microservices, and ensure smooth data flows across the value chain. By strengthening this digital foundation, you will help deliver seamless customer experiences, support sustainable growth, and enable innovative services that bring us closer to our climate-neutral goals.

Senior backend engineer

As a .NET/C# Engineer, you will be responsible for the development and integration of application features within our B2C domain.

You’ll work with a cross-functional product team using a modern stack: .NET/C#, Azure, Kubernetes, Kafka, SQL, etc

You’ll be responsible for

•  Developing and maintaining backend services and integrations in .NET/C#

•  Designing clean, modular architectures and ensuring system reliability and scalability

•  Developing reliable and performant event-driven integrations with other systems

•  Building cloud-ready services and working with CI/CD pipelines for fast and secure delivery

•  Optimizing performance and implementing monitoring solutions for high availability

•  Collaborating with frontend developers, testers, and product managers to deliver seamless digital solutions

•  Supporting and enhancing the B2C ecosystem 

Is this about you?

•  Solid experience with .NET/C# and backend development

•  Understanding of cloud platforms and cloud-native development (Azure preferred)

•  Experience with CI/CD, containerization, microservices and event-driven architectures

•  Know how to write performant, maintainable, scalable, secure and highly available microservices using best practice design patterns, and technologies like SQL/ NoSQL, Kafka, Azure Service Bus and Azure Eventhub

•  Based in the Netherlands and fluent in English

•  Collaborative mindset and willingness to work across disciplines

Bonus points for

•  Experience with observability, SLIs and SLOs

•  Knowledge of B2C operations

•  Experience within the energy sector